filament/ˈfɪləmənt; `fɪləmənt/ n1 very thin strand or fibre, like a thread 细线; 细丝; 线状物.2 thin wire in a light bulb that glows when electricity is passed through it （电灯泡的）灯丝. =>illus at bulb 见bulb插图.
牛津英汉双解词典